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  <title>createMergerMessage method - V2TIMMessageManager class - v2_tim_message_manager library - Dart API</title>


  
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<h1><span class="kind-method">createMergerMessage</span> method 
</h1></div>

    <section class="multi-line-signature">
      

<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-async/Future-class.html">Future</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="../../models_v2_tim_value_callback/V2TimValueCallback-class.html">V2TimValueCallback</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="../../models_v2_tim_msg_create_info_result/V2TimMsgCreateInfoResult-class.html">V2TimMsgCreateInfoResult</a></span>&gt;</span></span>&gt;</span></span>
<span class="name ">createMergerMessage</span>(<wbr><ol class="parameter-list"><li><span class="parameter" id="createMergerMessage-param-msgIDList">{<span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/List-class.html">List</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span>&gt;</span></span> <span class="parameter-name">msgIDList</span>, </span></li>
<li><span class="parameter" id="createMergerMessage-param-title"><span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span> <span class="parameter-name">title</span>, </span></li>
<li><span class="parameter" id="createMergerMessage-param-abstractList"><span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/List-class.html">List</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span>&gt;</span></span> <span class="parameter-name">abstractList</span>, </span></li>
<li><span class="parameter" id="createMergerMessage-param-compatibleText"><span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span> <span class="parameter-name">compatibleText</span>}</span></li>
</ol>)

      

    </section>
    
<section class="desc markdown">
  <p>创建合并消息
参数:</p>
<pre class="language-dart"><code>messageList	消息列表（最大支持 300 条，消息对象必须是 V2TIM_MSG_STATUS_SEND_SUCC 状态，消息类型不能为 V2TIMGroupTipsElem）
title	合并消息的来源，比如 "vinson 和 lynx 的聊天记录"、"xxx 群聊的聊天记录"。
abstractList	合并消息的摘要列表(最大支持 5 条摘要，每条摘要的最大长度不超过 100 个字符),不同的消息类型可以设置不同的摘要信息，比如: 文本消息可以设置为：sender：text，图片消息可以设置为：sender：[图片]，文件消息可以设置为：sender：[文件]。
compatibleText	合并消息兼容文本，低版本 SDK 如果不支持合并消息，默认会收到一条文本消息，文本消息的内容为 compatibleText， 该参数不能为 null。
</code></pre>
<p>备注:</p>
<pre class="language-dart"><code>多条被转发的消息可以被创建成一条合并消息 V2TIMMessage，然后调用 sendMessage 接口发送，实现步骤如下：
1. 调用 createMergerMessage 创建一条合并消息 V2TIMMessage。
2. 调用 sendMessage 发送转发消息 V2TIMMessage。
收到合并消息解析步骤：
1. 通过 V2TIMMessage 获取 mergerElem。
2. 通过 mergerElem 获取 title 和 abstractList UI 展示。
3. 当用户点击摘要信息 UI 的时候，调用 downloadMessageList 接口获取转发消息列表。
</code></pre>
</section>


    
<section class="summary source-code" id="source">
  <h2><span>Implementation</span></h2>
  <pre class="language-dart"><code class="language-dart">Future&lt;V2TimValueCallback&lt;V2TimMsgCreateInfoResult&gt;&gt; createMergerMessage({
  required List&lt;String&gt; msgIDList,
  required String title,
  required List&lt;String&gt; abstractList,
  required String compatibleText,
}) async {
  if (kIsWeb) {
    return TencentCloudChatSdkPlatform.instance.createMergerMessage(
        msgIDList: msgIDList,
        title: title,
        abstractList: abstractList,
        compatibleText: compatibleText);
  }

  return TIMMessageManager.instance.createMergerMessage(
    msgIDList: msgIDList,
    title: title,
    abstractList: abstractList,
    compatibleText: compatibleText
  );
}</code></pre>
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